公开(公告)号：US20170346549A1

公开(公告)日：2017-11-30

申请号：US15169244

申请日：2016-05-31

申请人： Alibaba Group Holding Limited

发明人： Chongjin Xie

IPC分类号： H04B10/038 ,  H04Q11/00

CPC分类号： H04B10/038 ,  H04J14/029 ,  H04Q11/0066 ,  H04Q2011/0058 ,  H04Q2011/0081

摘要： One embodiment of the present invention provides an optical link coupling two nodes in an optical transport network. The optical link includes a fiber span, which includes a first optical fiber, a second optical fiber, and a splitter. The input of the splitter is coupled to an input of the fiber span, and first and second outputs of the splitter are coupled, respectively, to the first and second optical fibers. The optical link further includes a first amplifier coupled to the first optical fiber, a second amplifier coupled to the second optical fiber, and an optical switch. Two inputs of the optical switch are coupled to outputs of the first and second amplifiers, respectively; and an output of the optical switch is coupled to an input of a third amplifier.

公开(公告)号：US09668036B2

公开(公告)日：2017-05-30

申请号：US14887570

申请日：2015-10-20

申请人： Verizon Patent and Licensing Inc.

发明人： Glenn A. Wellbrock ,  Tiejun J. Xia

IPC分类号： G02F1/00 ,  H04Q11/00 ,  G02B6/35 ,  G02B6/42 ,  H04J14/02 ,  H04B10/548 ,  H04B10/50 ,  H04B10/61 ,  H04L1/00

CPC分类号： H04Q11/0005 ,  G02B6/355 ,  G02B6/4286 ,  H04B10/032 ,  H04B10/501 ,  H04B10/548 ,  H04B10/61 ,  H04J14/02 ,  H04J14/0282 ,  H04J14/029 ,  H04L1/0045 ,  H04Q11/0062 ,  H04Q2011/0015 ,  H04Q2011/0016 ,  H04Q2011/0079

摘要： A system includes an optical transmitter and an optical receiver. The optical transmitter includes a first comb light source, a second comb light source, an optical switch configured to selectively switch either the first comb light source or the second comb light source through to an output of the optical switch, and optical modulators configured to apply differential phase modulation, to channels associated with the switched first comb light source or with the second comb light source, to generate modulated light output signals. The optical receiver includes coherent receivers configured to receive the modulated light output signals from the optical transmitter, and detect and process the received, modulated light output signals to generate corresponding digital signals. The optical receiver further includes a digital signal processor configured to apply forward error correction to the digital signals to generate forward error corrected digital signals.

公开(公告)号：US20160315730A1

公开(公告)日：2016-10-27

申请号：US15199116

申请日：2016-06-30

申请人： Mark E. Boduch ,  Kimon Papakos

发明人： Mark E. Boduch ,  Kimon Papakos

IPC分类号： H04J14/02 ,  H04B10/50 ,  H04B10/60 ,  H04Q11/00

CPC分类号： H04J14/0297 ,  H04J14/0204 ,  H04J14/0212 ,  H04J14/0217 ,  H04J14/0283 ,  H04J14/029 ,  H04Q11/0005

摘要： Example embodiments of the present invention relate to an optical node comprising of at least two degrees, a plurality of directionless add/drop ports, a plurality of primary WDM transmitters and receivers, and at least one protection WDM transmitter and receiver, wherein the at least one protection WDM transmitter and receiver can transmit and receive in place of any of the plurality of primary WDM transmitters and receivers.

公开(公告)号：US20150131992A1

公开(公告)日：2015-05-14

申请号：US14307746

申请日：2014-06-18

申请人： Electronics and Telecommunications Research Institute

发明人： Hyun Jae LEE ,  Bheom Soon JOO

IPC分类号： H04B10/275 ,  H04J14/02 ,  H04Q11/00

CPC分类号： H04B10/275 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/021 ,  H04J14/0213 ,  H04J14/0283 ,  H04J14/029 ,  H04J14/0294 ,  H04Q11/0005 ,  H04Q2011/0009 ,  H04Q2011/0047 ,  H04Q2011/0092

摘要： A method and apparatus for optical signal control using a filter in a multicasting ring network node and protection switching in an optical multiplex section is disclosed, in which a multicasting ring network node extracts or passes a wavelength from a node requiring optical signal wavelength extraction, transmits the passed optical signal to a neighboring node through control as necessary, and readily performs protection switching on an optical multiplex section signal.

摘要翻译： 公开了一种使用组播环网节点中的滤波器进行光信号控制的方法和装置，以及光复用部分中的保护倒换，其中组播环网节点从需要光信号波长提取的节点提取或传递波长， 根据需要通过控制将通过的光信号传送到相邻节点，并且容易地对光复用部分信号执行保护切换。

公开(公告)号：US08655165B2

公开(公告)日：2014-02-18

申请号：US12929845

申请日：2011-02-18

申请人： Kazuaki Nagamine

发明人： Kazuaki Nagamine

IPC分类号： H04B10/00 ,  H04J14/02

CPC分类号： H04J14/0279 ,  H04B10/0771 ,  H04B10/0777 ,  H04J14/0212 ,  H04J14/022 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0273 ,  H04J14/0283 ,  H04J14/029

摘要： A relay station has an optical switch that switches a reception path of an optical signal. The relay station generates a subsignal that has a wavelength different from the wavelength of a data signal corresponding to a signal to be transmitted and transmits an optical signal obtained by multiplexing the generated subsignal and the data signal. In this state, when the data signal is not included in the received optical signal, the relay station determines whether the subsignal is included in the optical signal. When it is determined that the subsignal is included, the relay station maintains a connection path of the optical switch without switching the connection path.

摘要翻译： 中继站具有切换光信号的接收路径的光开关。 中继站产生具有与要发送的信号对应的数据信号的波长不同的波长的子信号，并发送通过多路复用生成的子信号和数据信号而获得的光信号。 在这种状态下，当数据信号不包括在所接收的光信号中时，中继站确定该子信号是否包括在光信号中。 当确定包括子信号时，中继站维持光开关的连接路径而不切换连接路径。

公开(公告)号：US08457497B2

公开(公告)日：2013-06-04

申请号：US12696165

申请日：2010-01-29

申请人： Shan Zhong ,  Jean-Luc Archambault ,  Jun Bao

发明人： Shan Zhong ,  Jean-Luc Archambault ,  Jun Bao

IPC分类号： H04J14/02

CPC分类号： H04J14/0221 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0209 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/029 ,  H04J14/0291

摘要： The present disclosure provides optimized configurations for a directionless reconfigurable optical add/drop multiplexer application. The present invention includes an add module with improved optical signal-to-noise through placing amplifiers prior to a multi-cast optical switch. The present invention includes various drop module configurations utilizing distributed gain, channel selective filters, and bi-directional configurations to reduce power consumption and complexity. Additionally, the present invention includes an integrated broadcast and select architecture.

摘要翻译： 本公开提供了用于无方向性可重配置光分插复用器应用的优化配置。 本发明包括通过在多光学光开关之前放置放大器而具有改进的光信号噪声的增加模块。 本发明包括利用分布式增益，信道选择滤波器和双向配置的各种丢弃模块配置，以降低功耗和复杂性。 另外，本发明包括一个综合的广播和选择架构。

公开(公告)号：US08175458B2

公开(公告)日：2012-05-08

申请号：US12175422

申请日：2008-07-17

申请人： Winston I. Way

发明人： Winston I. Way

IPC分类号： H04J14/00

CPC分类号： H04J14/0283 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/021 ,  H04J14/0221 ,  H04J14/0232 ,  H04J14/0238 ,  H04J14/0241 ,  H04J14/0275 ,  H04J14/029 ,  H04J14/0291 ,  H04J14/0294 ,  H04J14/0297

摘要： Techniques, apparatus and systems for optical communications, including fiber ring networks with protection switching to maintain optical communications when an optical failure occurs and to automatically revert to normal operation when the optical failure is corrected, fiber ring networks that provide a circulating optical probe signal at an optical probe wavelength within the gain spectral range of optical amplifiers used in a fiber ring network to detect an optical failure, and fiber ring networks that support broadcast-and-select optical WDM signals carrying communication traffic to the optical ring nodes without regeneration at each optical ring node and one or more overlaid in-band node-to-node optical signals carrying communication traffic with regeneration at each node.

摘要翻译： 用于光通信的技术，装置和系统，包括具有保护切换的光纤环网络，以在发生光学故障时保持光通信，并且当光学故障被校正时自动恢复到正常操作;光纤环网络，其提供循环光探针信号 在光纤环网中用于检测光学故障的光放大器的增益光谱范围内的光探测器波长，以及支持向光环路节点承载通信业务的广播选择光WDM信号的光纤环网络， 光环节点和一个或多个覆盖的带内节点到节点光信号，其携带在每个节点处具有再生的通信业务。

公开(公告)号：US07701847B2

公开(公告)日：2010-04-20

申请号：US11247312

申请日：2005-10-11

申请人： Hong Chen ,  Chunfan Hou ,  Wei Fu ,  Jun Yan

发明人： Hong Chen ,  Chunfan Hou ,  Wei Fu ,  Jun Yan

IPC分类号： H04J1/16 ,  H04L1/00 ,  H04L12/26

CPC分类号： H04J14/0297 ,  H04J14/029 ,  H04L1/20 ,  H04L1/22

摘要： Disclosed is an inter-card channel protection method in a wave-length division multiplexing system. At the transmitting end, signals from the client side are divided via a coupler into two paths which are delivered to two cards, respectively. The two paths of signal transmitted by the two cards are sent via different routes to the receiving end. At the receiving end, the two paths of signal enter two cards, respectively, and the two cards communicate with each other directly. The standby card submits the signal quality detected by a detecting device to the primary card. The switching control unit on the primary card issues the commands of switching on/off the client-side lasers to the standby card in accordance with a decision made. One of the client-side lasers on the primary card and standby card is switched on while the other is switched off. The merits of this method include: protection can be realized with failures of card or essential chips thereon; protection switching can still be conducted with failures of system control unit; and, direct transfer of switching conditions and switching commands between the two cards is faster than communications with a system control unit via mailbox respectively.

摘要翻译： 公开了一种波长分割复用系统中的卡间信道保护方法。 在发送端，来自客户端的信号通过耦合器被分成两个路径，分别被传送到两个卡。 由两个卡发送的信号的两条路径通过不同的路由发送到接收端。 在接收端，信号的两条路径分别进入两个卡，两个卡直接相互通信。 备用卡将检测装置检测到的信号质量提交给主卡。 主卡上的切换控制单元根据作出的决定发出将客户侧激光器切换到备用卡的命令。 主卡和备用卡上的客户端激光器之一被打开，而另一个被关闭。 该方法的优点包括：可以通过卡片或必要芯片的故障来实现保护; 系统控制单元故障仍然可以进行保护切换; 并且两个卡之间的切换条件和切换命令的直接传送分别比通过邮箱与系统控制单元的通信更快。

公开(公告)号：US20090103915A1

公开(公告)日：2009-04-23

申请号：US11874678

申请日：2007-10-18

申请人： Aldo Aprile ,  Valerio Viscardi

发明人： Aldo Aprile ,  Valerio Viscardi

IPC分类号： H04J14/00 ,  H04B10/00

CPC分类号： H04J14/029 ,  H04J14/0279

摘要： In an optical network a 1+1 bidirectional protection system is presented. Each node across a link has photodiodes to monitor the power of signals received by the node on receiving working and protection optical fibers and also optical switches connected to transmission working and protection optical fibers to modulate signals to its counterpart node across the link. When a node detects a fault in the receiving working optical fiber, not only does the node switch to the receiving protection optical fiber, but it also switches to the transmission protection optical fiber to signal the fault to the node across the link. The optical switches on transmission working and protection optical fibers allow the two nodes across the link to signal each other at a protocol-less or primary protocol level for the link to revert back to its initial state.

摘要翻译： 在光网络中，提供了1 + 1双向保护系统。 链路上的每个节点具有光电二极管，用于监视节点在接收工作和保护光纤时接收到的信号的功率，以及连接到传输工作和保护光纤的光学开关，以将信号调制到跨越链路的其对应节点。 当节点检测到接收工作光纤中的故障时，不仅节点切换到接收保护光纤，而且还切换到传输保护光纤，以将故障信号通过链路发送给节点。 传输工作和保护光纤上的光交换机允许链路上的两个节点在无协议或主协议级别上相互信令，以使链路恢复到初始状态。

公开(公告)号：US07389018B1

公开(公告)日：2008-06-17

申请号：US11799007

申请日：2007-04-30

申请人： Martin Birk ,  Angela Lan Chiu ,  John L. Strand

发明人： Martin Birk ,  Angela Lan Chiu ,  John L. Strand

IPC分类号： G02B6/28 ,  H04B10/08

CPC分类号： H04J14/029 ,  H04J14/0279

摘要： An arrangement provides low cost path protection in an optical communications network. The arrangement has a portion 3 that provides (broadcasts) an outbound optical signal, and at least first and second transmitting portions 202, 206 transmit the outbound optical signal simultaneously onto at least first and second respective mutually distinct optical pathways 231, 232. Meanwhile, a selection arrangement 204 selects among plural incoming optical signals (via 1, 5) according to a SELECT control signal 228 to provide a selected signal, and an analyzer 222 analyzes characteristics of the selected signal to provide the SELECT control signal 228.

摘要翻译： 一种布置在光通信网络中提供低成本路径保护。 该布置具有提供（广播）出站光信号的部分3，并且至少第一和第二传输部分202,206同时将出站光信号发射到至少第一和第二相应的相互不同的光学路径231,232上。 同时，选择装置204根据SELECT控制信号228选择多个输入光信号（经由1,5）以提供选择的信号，并且分析器222分析所选信号的特性以提供SELECT控制信号228。